Saw guide



Jan. 26, 1932. J. VAN TREEK' l,842,573

SAW GUIDE Filed April 3, 1929 INVENTO af Vm W by the hard Patented dan.25, 11932 nurrna J' OSEPH VAN TBEEK, OF NUTLEY, NEW JERSEY SAW GUIDE.Application filed April 3, 1929. Serial No. 352,062.

This invention rclates to an improved saw :luide which is rearlilyportable and is parti-ularly adapted ior use by men who cut pipe with'thin walls which pipes require a square cut without hurrs.

it ils and by dri ugf a hanging tool on said is seated in a union couendand this i In order to secure an even tight oint 'de dint will receivesmall and large *c held in place by the hand and guided to cut straightacross u tube.

section is also to pro n which is pr vide l with a slot uw and whichwill resist the saw l thus prev-ent the sawing of the guide. nrthernorathe slot for the saw :is formed benseen separate pieces which can hehardened and the slot is not distorted or closed ng; process Theinvention is illust' "ted in the accomia ing drawings in which Figure lillu a the saw gu de and tube seated therein and also shows the way inwhich the device is; used. l ig ure an end View of the saw guide andFigure 3 is central longitudinal scc''ioi' ot' my device.

The saw guide *oinprises a hase 10 on which is placed two shaped 11 and12, one at each e d. The jaws har-e tapered walls 13 ive pipe f varioussizes and hold 'i' lflll securelv in e when they are held by the hand asshoe n in Figure l..

The end piece 'l is substantially of the same shape in cross section asthe main part ot the guide, having the V-shaped openings :formed betweenthe posts 15, 'thus forming V' j aws similar to the jaws 13.

The opposed faces 13 eonverge toward the base at an angle less than 45degrees. This arrangement of the faces at an acute angle supports thepipe not much below the centre of the pipe and forms side supports th athold their copper pipes against distortion from the Circular crosssectional shape under nornal sawing pressure. This arrangement alsoallows a relatively slight pressure when saw ing as the tube is heldagainst rotation which rotation is likely to occur when right angled orwider aws are used.

The inclined faces of the j aws are prei'e ably roughened by knurling orby forning small teeth 16 thereon. This keeps the tuhe from turning inthe sawinp; operation.

The plate 14 is spaced from the jaw 12 to form the saw slot 18. This isformed by placing a narrow plate 19 between the base 10 an d the plate14 or there may be a projectionpiece on one ofthcse members. The boltsor screws 20 secure the plate 14: to the base 10. The plate 14 can behardened or oase-hard ened and so can the jaws 12 and the sides of theslot 18 can be finished before assembling the parts to provide astraight slot 18 of even width throughout and which will not allow thesaw to deviate or tilt sufficientlv to destroy the straight transversecut across the pipe 21 in the saw guide.

A worknan can use this saw guide on the job, that is. he can cut off thepipe to suit the Circumstances and can bc assured that a clean straightcut without burrs is the result.

I elaim:-

1. A saw guide comprising a flat base, a pair of jaws at one end of thebase, a second pair of jaws closely adjacent the first pair to form aslit between them for the passage of a saw, the surfaces of' the opposedfaces of the jaws being convergent toward the base at an anglo less thana right angle to provde support for a thin tube a short distance belowthe centre thereof.

2. A saw guide comprising a fiat base with a pair of jaws at each end,and a plate se- 5 cured at one end of the base and in close proX- imitythereto to form a slit to receive a saw, the a-ws being of substantialthickness and of substantial width to provide a guiding surface for aconsiderable length of a saw blade to keep the same aligned, the opposedfaces of the jaws converging toward the base at an acute angle to eachother to support a thin tube a slight distance below the centre thereof.

In testimony Whereof he afiixes his signaa a ture.

JOSEPH VAN TREEK; V

